[Octave-bug-tracker] [bug #46292] Axes with absolute "units" have wrong dimensions in printout

[Ben Abbott]

Follow-up Comment #13, bug #46292 (project octave):

Ederag / others,

I tried comparing a PDF of the same size as the plot on screen and discovered
that the displayed fantasize on my Mac assumes 90 dpi (instead of 72 dpi).


close all
graphics_toolkit qt
width = 4;
height = 3;
figure (1)
set (gcf (), 'units', 'inches')
set (gcf (), 'paperunits', 'inches')
position = get (gcf (), 'position');
paperposition = get (gcf (), 'paperposition');
position(3:4) = [width, height];
paperposition(3:4) = [width, height];
set (gcf (), 'position', position)
set (gcf (), 'paperposition', paperposition)
plot (rand (3))
xlabel xlabel
ylabel ylabel
title 123456789012345678900123456789012345678901234567890
pdffile = 'wysisyg.pdf';
h = findall (gcf (), '-property', 'fontsize');
fontsize = cell2mat (get (h, 'fontsize'));
scale = 90 / get (0, 'screenpixelsperinch');
for n = 1:numel(h)
  set (h(n), 'fontsize', fontsize(n) * scale)
end
print ('-dpdfwrite', pdffile)
for n = 1:numel(h)
  set (h(n), 'fontsize', fontsize(n))
end


The resulting images for the PDF and the figure are attached. I'm curious if
the 90 dpi is some standard I'm not aware of ... i.e. do fontsizes on screen
and on paper assume a different dpi?



(file #35760, file #35761)
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Additional Item Attachment:

File name: figure-image.png               Size:48 KB
File name: PDF-image.png                  Size:82 KB


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